HUBS1416 Lecture Notes - Lecture 2: Vestibulocochlear Nerve, Conditioned Taste Aversion, Eardrum
Document Summary
Name and briefly describe the function of each of the 12 cranial nerves. Cranial nerves and their branches, spinal nerves and their branches. Eye movements- down & in-diagonal. (superior oblique muscle). S&m sensation to head & face, including gums and teeth. S&m taste from anterior 2/3 of the tongue, movement of muscles of facial expression. S&m taste from posterior 1/3 of the tongue, swallowing, salivary secretion. S&m sensory & motor autonomic supply to most organs. Outline briefly the form and function of our special sensory organs. Purpose: to determine the type of food (sweet, sour, salty, bitter, umami/savoury) and identify whether it is good or bad. Gustatory receptors (chemoreceptors) are located on taste buds which are found on papillae (elevations) on the tongue. Filliform (don"t contain taste buds but most numerous). Taste buds are also found on roof of mouth and it the walls of the throat. Chemoreceptors send information to the gustatory cortex which processes taste.